PPGI & PPGL (ເຫຼັກ galvanized prepainted & prepainted galvalume steel) ທີ່ເອີ້ນກັນວ່າເຫຼັກ pre-coated ຫຼື coil ເຫຼັກສີ, ມັນເປັນຜະລິດຕະພັນທີ່ເຮັດດ້ວຍແຜ່ນເຫຼັກ galvanized ແຊ່ຮ້ອນ, ແຜ່ນເຫຼັກ galvalume ແຊ່ຮ້ອນ, ແຜ່ນເຫຼັກ galvanized electro, etc. After surface pretreatment, one or several layers of organic coating are applied on the surface, and then baked and solidified. The color coated steel coil is light in weight, beautiful in appearance, and has good anti-corrosion performance, and can be directly processed. The color is generally divided into gray, sea blue, brick red, etc.